Pipe attachment for tubular furnaces.



E. S. MANNY..

PIPE ATTACHMENT F0,R. TUBULAR FURNACES.

ARPLIcAUoN m50 FEB.12,1911.

l ,2@0,994. Patented Sept. l25, A19117'.

2 SHEETS-SHEET l.

'Bf' @QQ www@ 5, s. MANNY. ESV

LAR fummo HMENT FOR TUBU l v PIPE AISLCCT'O" "um FEB n' 19HPatentedSept. 2o, 4. l

2 SHEETS-SHEET 2 STATES EUGNE SOLOMON NANNY, .or ivroNrnnA-t,l QUEBEC,CANADA.

l PIPE .ATTACHMENT ron TUBLARNURNACES.

To alleuhom-e't mag/concern.' v

Be it known that I, EUsNn SOLOMON MANNY, a subject .of Vthe :King` of'Great Britain, and residing at V27 Cotstreet, fin the city of Montreal,inthe Province of Quebec, in the Dominion of Canada, have inventedcertain new and -u'seful Improvements in Pipe Attachments for TubularFurnaces'; and I do hereby declare that the following is a full, clear,:and exact description of the same.

The invention relates to improvements in a pipe attachment for furnaces,water heaters, or the like, of the type of tubular furnaces having outercirculating tubes and inner tubes.

The object of the invention is to provide an attachment which willenable the inner tube to be properly supported within the outer tube andat the same time 4will not obstruct the expansion caused by the heat.

A further object of the invention is to provide an attachment, cheap ofconstruction and easy to adapt, which will considerablyv reduce. thediiiiculty encountered in securing the inner tube in this class offurnace.

In the drawings, Figure 1 is a sectional view through a furnace of thetype mentioned, showing the disposition of the tubes.

Fig. 2 is an enlarged longitudinal section through one of the outertubes, being shown secured to one of the water legs, the inner tubebeing shown in position with the attachment.

Fig. 3 is a perspective view of the inner tube support at one end.

Fig. 4 is a cross section on line A-A of Fig. 2, and

Fig. 5 is a cross section on line B-B of Fig. 2.

provided with longitudinal ribs 8 around its circumference at its rearend and with a square or -nut-shaped head 9 at its front end. 10 arelegs or supports, preferably 'Specification of Letters Patent. PatentedSept, 25,1917. @Applicationled February 12,1917. `'Serial N 0.148294. A

:three in number, provided within said outer tube 'at Vits front end.

The waterleg 4 `is provided with a series --of threaded vopeningsl1.1.and the water `leg :5 is `provided with corresponding circularopenings' 12 which are `in alinenient with ithe Iopenings 11 in saidwaterjleg vt, but smaller= in diameter. 13 vis a collar or knipple,which is screwed into the threaded vopening 11 into the threaded end `7ofthe outer circulating tube 6. The said nipple 13 is provided at oneend with outwardly projecting arms 14 which terminate at the outer endthereof, in an integral collar 15, the latter being disposed inalinement with the circular opening 12 in the water leg 5.

16 is an inner circulating tube, free within said outer tube 6, andsupported at its front or outer end by the supports or lugs 10, theinner end of said tube being preferably smaller in diameter on its outercircumference so as to enable it to be inserted through the collar 15and through the circular opening 12 in the leg 5, thus establishing awater circulation between the two compartments.

17 is a set screw provided on said collar 13 and rigidly securing saidinner tube 16 in position.

It will readily be seen that the inner circulating tube will be Wellsupported within theouter tube without,l in any way, preventing the fullexpansion of the said tube. Further, it may be stated that it was foundadvisable that the inner tube be unthreaded at both ends in order tohave full and equal expansion: therefore, the device above disclosed isthought to have a great advantage over all the means now employed insecuring the inner tube.

A further advantage of this device is that the inner tube can readily besecured within the outer tube and both placed in position merely byscrewing the nipple 13 in the leg 4, thus saving considerable time infitting the furnace with its tubes.

The square or nut-shaped head 9 on the front end of the outer ltubepermits the use of a wrench in putting said tube in place, while theribs 8 may be used in screwing the nipple 13 on the threaded end 7 ofthe outer tube 6.

In a furnace, the combination, with spaced outer and inner water legsformed with coaxial openings, the opening in the outer in the innerwater leg being plain and having a smaller diameter than'thefirst-*named opening; of an outer water-circulating tube closed'at oneend and having its other end disposed in registration with the openingthreaded; a nipple threaded ythrough ythe said opening inthe louterwater leg into the second-named 4end of said tube,- said nipple beingformed with a plurality of spaced arms which project into the vspacebetween the water legs and are connected at their eX- tremities by anannular supporting member of ,appreciably smaller diameter than said`tube; an open-ended inner water-circulating tube disposed within theyouter tube and pro- Copies of this patent may be obtained for Mjectingat one end through 'said annular supporting `member and the, plainopening in the innern water leg into the space between the latter andthe back wall of the furnace, the other end of said inner tubeterminating f short of the closed end of theouter tube; n said outerwater leg and internally and a plurality of supporting members arrangedwithin said outer tube and greuped around the said other end of innertube, whereby said innerf'tubeyis maintained'rin spaced relation kwithinsaid. outer tube.

f Signed at MontreaLrQuebec, Canada, this fourth day of January, 1917EUGNE SOLOMON MANNY; Vitne'sses:

F. A; Bns'r,

ALP. DEAL; f

ve cents each, by addressing the Commissioner of'latents, Washington,11.0. g A s f v

